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Radiation Exposure of Leukemia Blood Samples and Its Impacts on the Density of RBC, WBC, and PLT: <i>In Vitro</i> 被引量:1
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作者 Asaad H. Ismail Muhamad A. Hamad Edrees M. T. Harki 《Open Journal of Biophysics》 2012年第4期130-136,共7页
Complete blood counts were analyzed for 12 samples (six male & six female: Ages 15-40 years) of leukemia blood Samples for different dose rate and time of exposure using a Radium-226 source. Thus, an optimum time ... Complete blood counts were analyzed for 12 samples (six male & six female: Ages 15-40 years) of leukemia blood Samples for different dose rate and time of exposure using a Radium-226 source. Thus, an optimum time of exposure and exposure dose rate has improved for leukemia blood samples. Blood samples fractionated and placed in plastic wills, and melodic Coulter used to analysis exposed leukemia blood samples before and after exposure. Exposure technique involving CR-39 nuclear track detector and radiation survey dosimeter were used to estimate the alpha particle density incident on the blood samples and the exposed dose rate, respectively. In the first part, density of the accumulation of alpha particle on the surface of leukemia blood samples, and on the surface of CR-39NTDs varies exponentially with the exposed dose rate. This depends on the restricted energy loss of the incident alpha particles and target density. Assess an optimum time of exposure dose rate (1100 μSv/h) was the second objective. This depended on the changes in the blood components (PLT, WBC, and RBC) due to irradiation occurred for different durations of irradia-tion, and the duration of irradiation that influenced the leukemia blood samples (1Male;16 year and one Female 17 years) in this research was five minutes. Changes in the density of PLT, WBC, and RBC for leukemia blood samples and for different male (five male) and females (five female) was the third part of this research. It was found that the changes were variables due to the exposed dose rate. Optimum exposed dose rate to make more effects on the cancer cells for the leukemia blood samples began at the radiation dose rate of 43.25 1.206 μSv/h for both;male and female relatively, and this due to chromosomal aberration of the exposed cells. Finally, comparison study with the healthy blood samples has been investigated. More details are listed and clarified in the tables and figures of this paper. 展开更多
关键词 radiation Dose Alpha Particle RBC WBC PLT leukemia CR-39NTDs
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Breathing adapted radiation therapy for leukemia relapse in the breast: A case report
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作者 Omer Sager Ferrat Dincoglan +7 位作者 Selcuk Demiral Bora Uysal Hakan Gamsiz Fatih Ozcan Onurhan Colak Yelda Elcim Bahar Dirican Murat Beyzadeoglu 《World Journal of Clinical Oncology》 CAS 2019年第11期369-374,共6页
BACKGROUND Infiltration of the breast by leukemic cells is uncommon but may manifest as an oncological emergency requiring prompt management.Extramedullary relapse of T-cell acute lymphoblastic leukemia(T-ALL)within t... BACKGROUND Infiltration of the breast by leukemic cells is uncommon but may manifest as an oncological emergency requiring prompt management.Extramedullary relapse of T-cell acute lymphoblastic leukemia(T-ALL)within the breast is exceedingly rare and there is paucity of data in the literature regarding this entity.No consensus exists on management of isolated extramedullary breast relapses of T-ALL.Herein,we report a case of isolated extramedullary breast relapse of T-ALL treated with breathing adapted radiation therapy(BART)using the active breathing control(ABC)system.CASE SUMMARY The patient was a 33-year-old female with diagnosis of T-ALL.She received intensive systemic chemotherapy that resulted in complete remission of her disease,and then underwent allogeneic hematopoietic stem cell transplantation.After a 15 mo period without symptoms and signs of progression,the patient presented with palpable masses in both breasts.She complained from severe pain and swelling of the breasts.Imaging workup showed bilateral breast lesions,and diagnosis of breast infiltration by leukemic cells was confirmed after immunohistopathological evaluation.The patient suffering from severe pain,discomfort,and swelling of both breasts due to leukemic infiltration was referred to the Radiation Oncology Department for symptomatic palliation.Whole breast irradiation was delivered to both breasts of the patient with BART using the ABC system.The patient had complete resolution of her symptoms after treatment with BART.CONCLUSION BART with the ABC system resulted in complete resolution of the patient’s symptoms due to leukemic infiltration of both breasts with T-ALL.This contemporary treatment technique should be preferred for radiotherapeutic management of patients with leukemic infiltration of the breasts to achieve effective symptomatic palliation. 展开更多
关键词 T-CELL acute LYMPHOBLASTIC leukemia BREAST RELAPSE BREATHING adapted radiation therapy Active BREATHING control Case report
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Biomarkers Associated with Radiation-Induced Lung Injury in Cancer Patients
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作者 Yuan-Yuan Chen Dong-Xu Ao +1 位作者 Chen-Yang Zuo Jun Cai 《Journal of Biosciences and Medicines》 2023年第10期209-224,共16页
Radiotherapy (RT) is a common and effective non-surgical treatment for thoracic solid tumors, and radiation-induced lung injury (RILI) is the most common side effect of radiotherapy. Even if RT is effective in the tre... Radiotherapy (RT) is a common and effective non-surgical treatment for thoracic solid tumors, and radiation-induced lung injury (RILI) is the most common side effect of radiotherapy. Even if RT is effective in the treatment of cancer patients, severe radiation pneumonitis (RP) or pulmonary fibrosis (PF) can reduce the quality of life of patients and may even lead to serious consequences of death. Therefore, how to overcome the problem of accurate prediction and early diagnosis of RT for pulmonary toxicity is very important. This review summarizes the related factors of RILI and the related biomarkers for early prediction of RILI. 展开更多
关键词 radiation induced Lung Injury RILI FIBROSIS Biomarkers
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Mechanism of Thermally Radiative Prandtl Nanofluids and Double-Diffusive Convection in Tapered Channel on Peristaltic Flow with Viscous Dissipation and Induced Magnetic Field
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作者 Yasir Khan Safia Akram +3 位作者 Maria Athar Khalid Saeed Alia Razia A.Alameer 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第2期1501-1520,共20页
The application of mathematical modeling to biological fluids is of utmost importance, as it has diverse applicationsin medicine. The peristaltic mechanism plays a crucial role in understanding numerous biological flo... The application of mathematical modeling to biological fluids is of utmost importance, as it has diverse applicationsin medicine. The peristaltic mechanism plays a crucial role in understanding numerous biological flows. In thispaper, we present a theoretical investigation of the double diffusion convection in the peristaltic transport of aPrandtl nanofluid through an asymmetric tapered channel under the combined action of thermal radiation andan induced magnetic field. The equations for the current flow scenario are developed, incorporating relevantassumptions, and considering the effect of viscous dissipation. The impact of thermal radiation and doublediffusion on public health is of particular interest. For instance, infrared radiation techniques have been used totreat various skin-related diseases and can also be employed as a measure of thermotherapy for some bones toenhance blood circulation, with radiation increasing blood flow by approximately 80%. To solve the governingequations, we employ a numerical method with the aid of symbolic software such as Mathematica and MATLAB.The velocity, magnetic force function, pressure rise, temperature, solute (species) concentration, and nanoparticlevolume fraction profiles are analytically derived and graphically displayed. The results outcomes are compared withthe findings of limiting situations for verification. 展开更多
关键词 Double diffusion convection thermal radiation induced magnetic field peristaltic flow tapered asymmetric channel viscous dissipation Prandtl nanofluid
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Infusions of recipient-derived cytokine-induced killer cells of donor origin eradicated residual disease in a relapsed leukemia patient after allo-hematopoietic stem cell transplantation 被引量:5
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作者 ZHONG Zhao-dong LUO Yi +5 位作者 ZOU Ping ZHENG Jin-e YAO Jun-xia HUANG Shi-ang ZHOU Dong-feng YOU Yong 《Chinese Medical Journal》 SCIE CAS CSCD 2012年第9期1669-1671,共3页
A female patient diagnosed with acute myelocytic leukemia M5a (AML-M5a) relapsed 986 days after her allogeneic peripheral blood stem cell transplantation (alIo-PBSCT) from an unrelated male donor with matched huma... A female patient diagnosed with acute myelocytic leukemia M5a (AML-M5a) relapsed 986 days after her allogeneic peripheral blood stem cell transplantation (alIo-PBSCT) from an unrelated male donor with matched human leukocyte antigen (HLA). Three re-induction chemotherapies were administered, and partial remission was achieved. The patient was given repetitive infusion of cytokine-induced killer (CIK) cells expanded from recipient peripheral mononuclear cells of full donor chimerism due to loss of contact of quondam donor for donor lymphocyte infusion (DLI) and rejection of second transplantation. The patient achieved complete cytogenetical remission. This strategy might overcome the obstacle of donor unavailability and present an appealing new therapeutic alternative to donor-recruited adoptive immunotherapy for relapsed disease at post-transplantation. 展开更多
关键词 cytokine-induced killer cells stem cell transplantation relapsed leukemia minor residual disease donor lymphocyte infusion
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Protective Effects of Leukemia Inhibitory Factor on Retinal Vasculature and Cells in Streptozotocin-induced Diabetic Mice 被引量:1
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作者 Xiu-Fen Yang Ying-Xiang Huang +2 位作者 Ming Lan Tao-Ran Zhang Jie Zhou 《Chinese Medical Journal》 SCIE CAS CSCD 2018年第1期75-81,共7页
Background: Leukemia inhibitory factor (LIF) has been reported to possess various pharmacological effects, including displaying vascular and neuroprotective properties, during retinal disease. The aim of this study... Background: Leukemia inhibitory factor (LIF) has been reported to possess various pharmacological effects, including displaying vascular and neuroprotective properties, during retinal disease. The aim of this study was to investigate the vascular and structural changes in the retina of diabetic mice and to explore whether LIF prevents experimental diabetes-induced retinal injury in the early stages. Methods: Diabetes was induced in C57BI/6J mice with streptozotocin (STZ) injections. Successful diabetic animal models were randomly separated into two groups: the diabetic group (n = 15) and the LIF-treated group (n = 15). Normal C57BL/6 mice served as the normal control group (n = 14). Recombinant human LIF was intravitreally injected 8 weeks after the diabetic model was successfully established. Retinas were collected and evaluated using histological and immunohistochemical techniques, and flat-mounted retinas and Western blotting were performed at 18 weeks after the induction of diabetes and 2 days after the intravitreal injection of LIF. The analysis of variance test were used. Results: Histological analysis showed that there were fewer retinal ganglion cells (RGCs) and the inner nuclear layer (INL) became thinner in the diabetic model group (RGC 21.8 ± 4.0 and INL 120.2 ± 4.6 μm) compared with the normal control group (RGC 29.0 ± 6.7, t = -3.02, P = 0.007; INL 150.7 ±10.6 lain, t = -8.88, P 〈 0.001, respectively). After LIF treatment, the number of RGCs (26.9 ± 5.3) was significantly increased (t = 3.39, P = 0.030) and the INL ( 134.5± 14.2 lain) was thicker compared to the diabetic group (t - 2.75, P = 0.013). In the anti-Brn-3a-labeled retinas, the number of RGCs in the LIF-treated group (3926.0 ± 143.9) was obviously increased compared to the diabetic group (3507.7 ± 286.1, t = 2.38, P = 0.030), while no significance was found between the LIF-treated group and the control group (4188.3 ± 114.7, t= -2.47, P- 0.069). Flat-mounted retinas demonstrated that a disorganized, dense distribution of the vessel was prominent in the diabetic model group. Vessel distribution in the LIF-treated mouse group was typical and the thickness was uniform. The levels of phosphosignal transducer and activator of transcription 3 activation were obviously higher in the LIF-injected retinas than those in the diabetic control group (t = 3.85, P = 0.019) and the normal control (t = -3.20, P - 0.019). Conclusion: The present study provides evidence that LIF treatment protects the integrity of the vasculature and prevents retinal injury in the early stages of diabetic retinopathy in STZ-induced diabetic models. 展开更多
关键词 Diabetic Retinopathy: leukemia Inhibitory Factor: Streptozotocin-induced Diabetic Mice
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An isolate alpha-fetoprotein producing gastric cancer liver metastasis emerged in a patient previously affected by radiation induced liver disease 被引量:1
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作者 Vincenzo Cardinale Gianmaria De Filippis +6 位作者 Alessandro Corsi Augusto La Penna Michele Rossi Carlo Catalano Paolo Bianco Adriano De Santis Domenico Alvaro 《World Journal of Hepatology》 CAS 2013年第7期398-403,共6页
We report a case of an isolated hepatic neoplasia which originated in a site of the liver previously affected by radiation induced liver disease (RILD) in a patient resected for gastric cancer and referred to us for h... We report a case of an isolated hepatic neoplasia which originated in a site of the liver previously affected by radiation induced liver disease (RILD) in a patient resected for gastric cancer and referred to us for high serum alpha-fetoprotein (AFP) levels. This case challenged us in distiguishing, even histologically, between primary liver cancer and AFP producing gastric cancer metastasis. Only a panel of immunohis-tochemical markers allowed the definitive diagnosis of liver metastasis of endodermal stem cell-derived and AFP producing gastric cancer. We discuss the criteria for a differential diagnosis, as well as the possible link between RILD and emergence of liver neoplasia. 展开更多
关键词 ALPHA-FETOPROTEIN producing gastric cancer Hepatoid ADENOCARCINOMA LIVER metastasization radiation induced LIVER disease
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ESTABLISHMENT OF DIFFERENTIAL DISPLAY mRNA AND ITS APPLICATION IN THE STUDY ON THE MECHANISM OF LUNG CANCER INDUCED BY RADIATION 被引量:1
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作者 杨梅英 叶常青 +1 位作者 陈剑云 刘雷华 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 1999年第3期161-163,共3页
Objective: A method for separating mRNAs by means of the polymerase chain reaction (differential display mRNA), and identifying the genes related to radiation-induced lung cancer was introduced. Methods: The RNAs were... Objective: A method for separating mRNAs by means of the polymerase chain reaction (differential display mRNA), and identifying the genes related to radiation-induced lung cancer was introduced. Methods: The RNAs were isolated from two pairs of samples, SV40-immortalized human fetal tracheal fibroblast cell (SHTF) versus αSHTF cell (transformed SHTF cell induced by α particles) and lung cancer tissue versus normal lung tissue obtained from one miner, and amplified by RTPCR. The differential expressed gene fragments were displayed by autoradiograph or silver nitrate stain. Results: The differential display mRNA method was established using both cell and tissue samples. The bands stained by silver nitrate were clearer than those on X-ray film. The rate of reamplification of differentially expressed gene fragments stained by silver nitrate is 80%, higher than that by autoradiograph, 50%. Conclusion: Differential display mRNA method was established successfully on both cell and tissue samples. The modified method for staining band increased the rate of reamplification and established the basis for confirming relative genes. 展开更多
关键词 Differential display mRNA Autoradiograph Silver nitrate stain radiation induced cancer
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A Modified Monte Carlo Model of Speckle Tracking of Shear Wave Induced by Acoustic Radiation Force for Acousto-Optic Elasticity Imaging 被引量:3
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作者 李玉娇 黄伟骏 +3 位作者 马风超 王睿 陆明珠 万明习 《Chinese Physics Letters》 SCIE CAS CSCD 2016年第11期54-57,共4页
A modified Monte Carlo model of speckle tracking of shear wave propagation in scattering media is proposed. The established Monte Carlo model mainly concerns the variations of optical electric field and speckle. The t... A modified Monte Carlo model of speckle tracking of shear wave propagation in scattering media is proposed. The established Monte Carlo model mainly concerns the variations of optical electric field and speckle. The two- dimensional intensity distribution and the time evolution of speckles in different probe locations are obtained. The fluctuation of speckle intensity tracks the acoustic-radiation-force shear wave propagation, and especially the reduction of speckle intensity implies attenuation of shear wave. Then, the shear wave velocity is estimated quantitatively on the basis of the time-to-peak algorithm and linear regression processing. The results reveal that a smaller sampling interval yields higher estimation precision and the shear wave velocity is estimated more efficiently by using speckle intensity difference than by using speckle contrast difference according to the estimation error. Hence, the shear wave velocity is estimated to be 2.25 m/s with relatively high accuracy for the estimation error reaches the minimum (0.071). 展开更多
关键词 of on IS for A Modified Monte Carlo Model of Speckle Tracking of Shear Wave induced by Acoustic radiation Force for Acousto-Optic Elasticity Imaging by in
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Effect of Cycloheximide on the Adaptive Response Induced by Low Dose Radiation 被引量:4
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作者 CAI Lu AND LIu SHUZHENGDepartment of Radiation Biology, Institute of Radiation Medicine, Norman Bethune University of Medical Sciences, Changchun 130021, China Corresponding author 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 1992年第1期46-52,共7页
Human lymphocytes pre-exposed to 10 mGy or 50 mGy of X-rays become less sensitive to subsequent large dose irradiation, exhibited lower rate of chromosome aberration than expected. This adaptive response could be inhi... Human lymphocytes pre-exposed to 10 mGy or 50 mGy of X-rays become less sensitive to subsequent large dose irradiation, exhibited lower rate of chromosome aberration than expected. This adaptive response could be inhibited by cycloheximide, a protein synthesis inhibitor for successive 2 h period ranging from 0.5h before to 4h after the low dose exposure, indicating that the adaptive response was directly related with the protein synthesis. 展开更多
关键词 In Effect of Cycloheximide on the Adaptive Response induced by Low Dose radiation
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Radiation-induced osteosarcoma of the maxilla and mandible after radiotherapy for nasopharyngeal carcinoma 被引量:6
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作者 Lie-Qiang Liao Hong-Hong Yan +5 位作者 Jun-Hao Mai Wei-Wei Liu Hao Li Zhu-Ming Guo Zong-Yuan Zeng Xue-Kui Liu 《Chinese Journal of Cancer》 SCIE CAS CSCD 2016年第11期625-631,共7页
Background:The increasing incidence of radiation-induced osteosarcoma of the maxilla and mandible(RIOSM) has become a significant problem that can limit long-term survival.The purpose of this study was to analyze the ... Background:The increasing incidence of radiation-induced osteosarcoma of the maxilla and mandible(RIOSM) has become a significant problem that can limit long-term survival.The purpose of this study was to analyze the association of clinicopathologic characteristics with treatment outcomes and prognostic factors of patients who developed RIOSM after undergoing radiotherapy for nasopharyngeal carcinoma(NPC).Methods:We reviewed the medical records of 53,760 NPC patients admitted to Sun Yat-sen University Cancer Center during the period August 1964 to August 2012.Of these patients,47 who developed RISOM and met inclusion criteria were included in this study.Two of these 47 patients refused treatment and were then excluded.Results:For all patients treated for NPC at Sun Yat-sen University Cancer Center during the study period,the total incidence of RIOSM after radiotherapy was 0.084%(47/53,760).Two patients(4.4%) had metastases at the diagnosis of RIOSM.Thirty-nine of the 45(86.7%) patients underwent surgery for RIOSM;most patients(24/39;61.5%) who underwent resection had gross clear margins,with 15 patients(38.5%) having either a gross or microscopic positive margin.All patients died.The 1-,2-,and 3-year overall survival(OS) rates for the entire cohort of 45 patients were 53.3%,35.6%and 13.5%,respectively.The independent prognostic factors associated with high OS rate were tumor size and treatment type.Conclusions:RISOM after radiotherapy for NPC is aggressive and often eludes early detection and timely intervention.Surgery combined with postoperative chemotherapy might be an effective treatment to improve patient survival. 展开更多
关键词 radiation-induced osteosarcoma Maxilla and mandible Nasopharyngeal carcinoma PROGNOSIS
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Rabbit model of radiation-induced lung injury 被引量:2
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作者 Zhen-Zong Du Hua Ren +3 位作者 Jian-Fei Song Li-Fei Zhang Feng Lin Hai-Yong Wang 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2013年第3期237-241,共5页
Objective:To explore the feasibility of establishing an animal model of chronic radiationinduced lung injury.Methods:Twenty-eight New Zealand white rabbits were randomly divided into 3 groups(the right lung irradiatio... Objective:To explore the feasibility of establishing an animal model of chronic radiationinduced lung injury.Methods:Twenty-eight New Zealand white rabbits were randomly divided into 3 groups(the right lung irradiation group,the whole lung irradiation group and the control group).Animal model of radiation-induced lung injury was established b) highdoes radiotherapy in the irradiation groups,then all rabbits underwent CT and pathological examinations at 1.2.4.8.12.16 weeks,respectively after radiation.Results:Within 4 weeks of irradiation,some rabbits in the right lung irradiation group and whole lung irradiation group died. CT and pathological examinations all showed acute radiation pneumonitis.At 8-12 weeks after irradiation,CT scanning showed ground glass samples signs,patchy shadows and fibrotic stripes. Pathological examination showed the fibrosis pulmonary alveolar wall thickened obviously. Conclusions:The clinical animal model of chronic radiation-induced lung injury which corresponds to practical conditions in clinic can be successfully established. 展开更多
关键词 New Zealand RABBIT CHRONIC radiation-induced INJURY MODEL
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Differential Proteomics Reveals the Potential Injury Mechanism Induced by Heavy Ion Radiation in Mice Ovaries 被引量:1
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作者 HE Yu Xuan ZHANG Hong +4 位作者 LI Hong Yan ZHANG Yong JIA Qi Peng LI Zong Shuai ZHAO Xing Xu 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2017年第4期301-307,共7页
In the present study, we used a proteomics approach based on a two-dimensional electrophoresis (2-DE) reference map to investigate protein expression in the ovarian tissues of pubertal Swiss-Webster mice subjected t... In the present study, we used a proteomics approach based on a two-dimensional electrophoresis (2-DE) reference map to investigate protein expression in the ovarian tissues of pubertal Swiss-Webster mice subjected to carbon ion radiation (CIR). Among the identified proteins, ubiquitin carboxy-terminal hydrolase L1 (UCH-L1) is associated with the cell cycle[1] and that it influences proliferation in ovarian tissues. We analyzed the expression of UCH-L1 and the proliferation marker proliferation cell nuclear antigen (PCNA) following CIR using immunoblotting and immunofluorescence. The proteomics and biochemical results provide insight into the underlying mechanisms of CIR toxicity in ovarian tissues. 展开更多
关键词 Differential Proteomics Reveals the Potential Injury Mechanism induced by Heavy Ion radiation in Mice Ovaries Figure
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Adsorption behavior of uranyl ions onto amino-type adsorbents prepared by radiation-induced graft copolymerization 被引量:3
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作者 迟洪影 刘西艳 +7 位作者 马红娟 杨晓娟 虞鸣 张建勇 王敏 李景烨 Hiroyuki Hoshina Noriaki Seko 《Nuclear Science and Techniques》 SCIE CAS CSCD 2014年第1期20-26,共7页
Amino-type adsorbents(ATAs) were prepared by radiation-induced graft copolymerization of 4-hydroxybutyl acry late glycidyl ether(HB) onto a polyethylene-coated polypropylene(PE/PP) duplex fiber of a non-woven fabric,a... Amino-type adsorbents(ATAs) were prepared by radiation-induced graft copolymerization of 4-hydroxybutyl acry late glycidyl ether(HB) onto a polyethylene-coated polypropylene(PE/PP) duplex fiber of a non-woven fabric,and modified with different amines of ethylenediamine(EDA),diethylenetriamine(DETA),triethylenetetramine(TETA) and diethylamine(DEA).The adsorption behavior of uranyl ions onto the ATAs was studied in batch experiments.The effects of the contact time,initial concentration of the ions,temperature,and pH value.The salinity were investigated along with the adsorption kinetics and the adsorption isotherms.The kinetic experimental data followed the pseudo second-order kinetic model,and the adsorption isotherms correlated well with the Langmuir model.The ATAs showed good efficiency in adsorbing uranyl ions,with the best saturation adsorption capacity being 64.26 mg g^(-1) for ATA-DETA within 120 min.The temperature dependence of ATADETA was quite abnormal and the quickest behavior was obtained at 25 ℃.ATAs showed good adsorption capacity over a wide pH range of 4.0-8.5,and HCl could be used in the elution process.Salinity of the solution had great effect on the adsorption capacity,3.5%salinity resulted in a 55%loss of capacity from ATA-DETA.The selectivity of ATA-DETA showed an order of:UO_2^(2+)≈Fe^(3+)> Zn^(2+) > VO_3^- > Co^(2+) > Ni^(2+). 展开更多
关键词 吸附行为 铀酰离子 接枝共聚 辐射诱导 吸附剂 基型 LANGMUIR模型 吸附等温线
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Correlation between miR-564, TGF-β1, and radiation-induced lung injury 被引量:4
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作者 Yunzhang Ge Tao Xie +5 位作者 Bin Yang Qianxia Li Qingrong Ren Xiaoyi Zhou Desheng Hu Zhongshu Tu 《Oncology and Translational Medicine》 2019年第5期204-210,共7页
Objective Our study aimed to analyze the expression of miR-564 and TGF-β1 in cancer tissues and the serum of patients with radiation-induced lung injury,and to investigate the relationship between them and radiation-... Objective Our study aimed to analyze the expression of miR-564 and TGF-β1 in cancer tissues and the serum of patients with radiation-induced lung injury,and to investigate the relationship between them and radiation-induced lung injury.Methods In situ hybridization and real-time fluorescence quantitative method were used to detect the expression of miR-564.Additionally,immunohistochemistry and enzyme-linked immunosorbent assay(ELISA)were performed to detect the expression of TGF-β1.Results The overall incidence of acute radiation pneumonia was 55.9%(100/179).The incidence of≥grade 2 radioactive pneumonia was 24.0%(43/179)and that of grade 1 was 31.8%(57/179).The expression of miR-564 in grade≥2 was slightly higher than that in patients without or with grade 1,but there was no statistical difference(P=0.86).The serum level and ratio of miR-564 in patients with grade≥2 were significantly higher than those without or with grade 1(P=0.005,P=0.025,respectively).The expression of TGF-β1 in grade≥2 was significantly higher than that of patients without or with grade 1(P=0.017).The serum levels of TGF-β1 in grade≥2 were significantly higher than those in patients without or with grade 1(P=0.038).Although the ratio of TGF-β1 in radiation pneumonia of grade≥2 was significantly higher than that of without or with grade 1,there was no significant difference(P=0.24).Moreover,patients with higher expression of miR-564 and lower expression of TGF-β1 had better prognosis.Conclusion MiR-564 and TGF-β1 are predictors of radiation-induced lung injury.Monitoring its changing trend can improve the accuracy of predicting radiation-induced lung injury.The levels and ratio of serum miR-564 and TGF-β1 in patients with radiation-induced lung injury are related to the severity of radiationinduced lung injury. 展开更多
关键词 radiation-induced LUNG INJURY miR-564 TGF-Β1
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Vertical variations of wave-induced radiation stress tensor 被引量:3
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作者 郑金海 阎以新 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2001年第4期597-605,共9页
The distributions of the wave-induced radiation stress tensor over depth are studied by us- ing the linear wave theory, which are divided into three regions, i. e., above the mean water level, be- low the wave trough ... The distributions of the wave-induced radiation stress tensor over depth are studied by us- ing the linear wave theory, which are divided into three regions, i. e., above the mean water level, be- low the wave trough level, and between these two levels. The computational expressions of the wave-in- duced radiation stress tensor at the arbitrary wave angle are established by means of the Eulerian coordi- nate transformation, and the asymptotic forms for deep and shallow water are also presented. The verti- cal variations of a 30°incident wave-induced radiation stress tensor in deep water, intermediate water and shallow water are calculated respectively. The following conclusions are obtained from computations. The wave-induced radiation stress tensor below the wave trough level is induced by the water wave parti- cle velocities only, whereas both the water wave particle velocities and the wave pressure contribute to the tensor above the wave trough level. The vertical variations of the wave-induced radiation stress ten- sor are influenced substantially by the velocity component in the direction of wave propagation. The dis- tributions of the wave-induced radiation stress tensor over depth are nonuiniform and the proportion of the tensor below the wave trough level becomes considerable in the shallow water. From the water surface to the seabed, the reversed variations occur for the predominant tensor components. 展开更多
关键词 Linear wave theory wave-induced radiation stress tensor vertical variation
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Effect of radiation-induced color centers absorption in optical fibers on fiber optic gyroscope for space application 被引量:3
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作者 金靖 李亚 +2 位作者 张祖琛 吴春晓 宋凝芳 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第8期216-221,共6页
The effects of color centers' absorption on fibers and interferometric fiber optical gyroscopes(IFOGs) are studied in the paper. The irradiation induced attenuation(RIA) spectra of three types of polarization-mai... The effects of color centers' absorption on fibers and interferometric fiber optical gyroscopes(IFOGs) are studied in the paper. The irradiation induced attenuation(RIA) spectra of three types of polarization-maintaining fibers(PMFs), i.e.,P-doped, Ge-doped, and pure silica, irradiated at 100 Gy and 1000 Gy are measured in a wavelength range from 1100 nm to1600 nm and decomposed according to the Gaussian model. The relationship of the color centers absorption intensity with radiation dose is investigated based on a power model. Furthermore, the effects of all color centers' absorption on RIA and mean wavelength shifts(MWS) at 1300 nm and 1550 nm are discussed respectively. Finally, the random walk coefficient(RWC) degradation induced from RIA and the scale factor error induced by MWS of the IFOG are simulated and tested at a wavelength of 1300 nm. This research will contribute to the applications of the fibers in radiation environments. 展开更多
关键词 color centers' absorption radiation-induced attenuation mean wavelength shift fiber optical gyroscope
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Radiation-induced attenuation self-compensating effect in super-fluorescent fiber source 被引量:2
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作者 杨远洪 索鑫鑫 杨巍 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第9期266-270,共5页
The compact super-fluorescent fiber source (SFS) output spectra variations at different pump currents and under different dose of gamma-ray radiation were measured and compared respectively. The radiation-induced at... The compact super-fluorescent fiber source (SFS) output spectra variations at different pump currents and under different dose of gamma-ray radiation were measured and compared respectively. The radiation-induced attenuation (RIA) self-compensating effect in SFS based on photo-bleaching was found and the general mathematic model of SFS output spectra variations was made. The radiation-induced background attenuation (RIBA) at the pump wavelength was identified to be the main cause of the total output power and spectra variations and the variations can then be compensated by active control of the pump power to enhance the self-compensating effect. With closed-loop feedback control of pump current, double-pass backward (DPB) configuration and spectrum re-shaping technology, an SFS prototype was made and tested. The mean-wavelength stability of about 87.4 ppm and output power instability of less than 5% were achieved under up to 200 krad (Si) gamma-ray irradiation. 展开更多
关键词 super-fluorescent fiber source Er-doped fiber radiation-induced attenuation mean wavelength stability
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Radiation-induced brain injury after a conventional dose of intensity-modulated radiotherapy for nasopharyngeal carcinoma:a case report and literature review 被引量:1
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作者 Qian Zhang Jie Tang +1 位作者 Jiayu Du Xiaojie Ma 《Oncology and Translational Medicine》 2020年第1期30-35,共6页
A 61-year-old female nasopharyngeal carcinoma patient was admitted to the hospital with sudden cognitive dysfunction one month after Volumetric Intensity Modulated Arc Therapy(VMAT)conventional dose radiotherapy,and t... A 61-year-old female nasopharyngeal carcinoma patient was admitted to the hospital with sudden cognitive dysfunction one month after Volumetric Intensity Modulated Arc Therapy(VMAT)conventional dose radiotherapy,and the initial diagnosis was radiation-induced brain injury(RBI).After comprehensive treatment with steroid hormones,the patient’s condition rapidly improved.Typically,in nasopharyngeal carcinoma patients treated with VMAT,the incidence of RBI is extremely low when the temporal lobe dose is less than 65 Gy or 1%of the volume is less than 65 Gy.When this limit is exceeded,RBI may occur in varying degrees.However,in this case,even though the temporal lobe dose was under the prescribed limit,the patient still experienced RBI.The rare observations in this case can be used as a reference,and clinicians should seriously consider the possibility of RBI in similar cases. 展开更多
关键词 radiation-induced brain injury NASOPHARYNGEAL carcinoma VMAT
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Effect of nano-SiO_2 films on the electron radiation induced conductivity of polyimide
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作者 岳龙 吴宜勇 +3 位作者 孙承月 石亚平 肖景东 何世禹 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第7期383-386,共4页
The radiation induced conductivity (RIC) behaviors in nano-SiO2 deposited polyimide (PI) were investigated using the in situ measurement technique. The results indicate that, by comparison with the case of virgin ... The radiation induced conductivity (RIC) behaviors in nano-SiO2 deposited polyimide (PI) were investigated using the in situ measurement technique. The results indicate that, by comparison with the case of virgin polyimide, the RIC in nano-SiO2/polyimide shows low steady state values. Moreover, the steady state RIC is a power function of the dose rate with a power index of 0.659, lower than that of 0.76 in the virgin polyimide. The interfacial barrier and trapping effects are the main reasons for the change. Meanwhile, both of the interfacial effects also result in a unipolar carrier transportation mechanism in nano-SiO2 deposited PI from the dipolar one in the virgin PI. The mechanisms of the RIC behaviors are discussed in the paper. 展开更多
关键词 POLYIMIDE radiation induced conductivity NANO-SIO2
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